Before You Begin
Question #45324
The Question
Consider the physiological and genetic dynamics of the transgenic Flavr Savr tomato. Which of the following statements regarding its development and reproductive biology is INCORRECT?
Options
- A.
It utilizes antisense RNA technology to achieve post-transcriptional silencing of the polygalacturonase gene.
- B.
Delayed fruit softening is achieved by preventing the enzymatic degradation of pectin in the cell walls of the pericarp.
- C.
The antisense RNA directly inhibits triple fusion, slowing the metabolic rate of the triploid endosperm to match delayed ripening.
- D.
The modification creates a physiological decoupling between the senescence of the diploid ovary wall and the maturation of the seeds.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Evolutionary_Exception
Tackle problems where standard rules evolve or change based on specific environmental constraints.
Concepts Behind This Question
Triploid_Endosperm|Polygalacturonase|Flavr_Savr_Tomato_Logic
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Spatial and temporal distinction between somatic fruit modification and reproductive fertilization events.
The trap relies on students assuming a transgenic modification affecting the 'fruit' directly alters the 'seed' or 'endosperm' formation, failing to distinguish between the diploid pericarp (ovary wall) and the triploid endosperm (product of triple fusion).
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Sexual Reproduction in Flowering Plants - Class 12 |
| Concept | Double Fertilization Stoichiometry |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |